Improvement in carving-machines



RICE. Carving-Machine.

No. 207,207. Patented Aug. 20,1878.

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WITNESSES.

INVENTOR 6 l xfalw ATTORNEYS.

N-PETERS, PHOTO-LITHOGRAPHER. WASHINGTON. D O,

UNITED STATES PATENT OFFICE.

MATHEW RICE, OF AUGUSTA, GEORGIA.

IMPROVEMENT IN CARVlNG-MACHlNES.

Specification forming part of Letters Patent No. 207,207, dated August .20, 1878; application filed, 1

July 10, 1878.

To all whom it may concern:

Be it known that I, MATHEW RICE, of Augusta, in the county of Richmond. and State of Georgia, have invented new and useful Improvements in Attachments to Wood-W orkin g Machines, of which the following is a specification:

This invention relates to a device which may he used in connection with machines for carvin g, dovetailin g, molding, blind-slat mortisin g, and other descriptions of wood-working.

The invention consists in a novel construction, arrangement, and combination of a frame or standard, an adjustable sliding shaft, and a swinging arm, employed in connection with a tool-carrying device, whereby provision is made for adjusting the tool to different positions, according to the character of the work.

The accompanying drawing represents a device embodying my improvements, Figure 1 being a side view, Fig. 2 an end view, and Fig. 3 a horizontal section taken in the line :10 aof Fig. 1. Fig. 4 is a detail view, hereinafter referred to.

Similar letters of reference indicate corresponding parts.

A represents a frame or standard adapted to be attached to the bed of a lathe or other machine in any suitable manner. The upper portion of this standard is curved laterally, and terminates in a sleeve, a, in which works a shaft, B, arranged to slide vertically therein.

To the standard A is attached an arm, 0, which extends upward, and is then bent laterally, and carries at its end a screw, D, pro vided with a wheel, 0?, for turning it. This screw D engages with an internal thread in the upper portion of the shaft B, so that by turning the screw in one direction or the other the shaft B is raised or lowered in the sleeve a, said shaft and sleeve being squared to prevent the shaft from turning.

The lower end of the shaft B is turned to a cylindrical form, and is provided with a peripherical groove, as represented in dotted lines. in Fig. 1. To this cylindrical lower end is attached a horizontal arm, G, one endof which is provided with a socket, e, fitting over said cylindrical portion, and a set-screw, f, for engagement with the peripherical groove above referred to. This arm G is arranged to swing around the pivot formed by the cylindrical lower end of the shaft B, and by means of the set-screw f it may be held firmly in any position in which it may be placed. The outer end of the arm G is formed into a spindle or pivot, g, for the reception of a tool-holder of suitable description. The portion of the arm G immediately in rear of the pivot g is enlarged and formed into a circular flange or disk, J, on the periphery of which are notches i.

The tool-holder here shown represents a portion of a frame adapted to carrying tools for various kinds of wood-working, and arranged to turn on the pivot g, so that the tool may be inclined in different directions, or the holder may be reversed when provided with a tool at both ends. To this tool-holder H is attached a spring-pawl, consisting of a flat spring, L, provided with an arm, Z. The spring has one end attached to the tool-holder, and the other end is formed into a thumb-piece for lifting it, and the arm lextends laterally from the length of the spring and engages with the notches i. By this means the tool-holder may be placed so as to incline the tool in different directions by disengaging the arm I from one notch i, then turning the holder to the desired position, and then engaging the arm with another notch. YVhen so engaged the tool-holder is held firmly in whatever position it may be adjusted to.

The arm 0, which carries the hand-screw D, is provided with a scale, M, and the shaft B is provided with an indicator, 1 with its point in close proximity to the figures marked on said scale. By this means the operator is enabled to adjust the height of the tool-holder line a '0 and against the grain in the direction v of the line 2; w. This should be avoided for fear of splitting the wood, and my invention provides ample means for avoiding it, as follows: After cutting from u to c the shaft B is raised so as to withdraw the tool from the work. The pawl L is then disengaged from the notch '5 in the flange J, and the tool-holder is reversed so as to bring the opposite tool to the work, and this tool, cutting in the opposite direction, cuts from w to 12 until it reaches the point at which the first tool ceased cutting.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- MATHEW RICE.

Witnesses T. M. PREVAL, A. J. DAVIS. 

